pair-st-lines

Related Questions

• If the acute angles between the pairs of lines $3{{x}^{2}}-7xy+4{{y}^{2}}=0$ and $6{{x}^{2}}-5xy+{{y}^{2}}=0$ be ${{\theta }_{1}}$ and ${{\theta }_{2}}$ respectively, then

  ---

• The pair of straight lines joining the origin to the points of intersection of the line $y=2\sqrt{2}x+c$and the circle ${{x}^{2}}+{{y}^{2}}=2$are at right angles, if

  ---

• The combined equation of the bisectors of the angle between the lines represented by $({{x}^{2}}+{{y}^{2}})\sqrt{3}=$ $4xy$ is

  ---

• The value of $\lambda ,$ for which the equation ${{x}^{2}}-{{y}^{2}}-x$–$\lambda y-2=0$represent a pair of straight line, are

  ---

• The equation to the pair of straight lines through the origin which are perpendicular to the lines $2{{x}^{2}}-5xy+{{y}^{2}}=0,$is

  ---